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This is a little bit of a long story I have to tell you so I don't get flamed for a pirated copy of 8.1.My daughter has had an Asus desktop she bought at Best Buy a couple of years ago.About 6 months ago she bought a copy of Rollback in case she had computer problems.Well she did and tried to rollback

the OS.Everything went well untill she lost power for about two hours.Booted back up and nothing

but a black screen.I went over to work on it but couldn't get anywhere.Here is the fun part.Took it to a

computer shop to be fixed.He called me and said the hard drive was split into 10 small partitions.He

figures it must have been the rollback program.Anyway he reformatted the drive and installed 8.1 and

AVG free.Told ya this was gonna be long.My daughter bought Kaspersky anti-virus and I installed it for her.Did not uninstall AVG at that point to make sure Kaspersky installed right.I did disable AVG and took it out of startup.I did a scan to make sure all was ok.Kaspersky picked up KMS activator.I googled it and found out it activates illegal copies of Windows.I was curious why AVG didn't pick it up so I checked the

whitelist and it's in there.Not only is it an illegal copy but it's 32 bit instead of 64 bit.So,I called the computer place and he is no longer in business.The best I can tell he screwed her and she didn't know it.

Long winded ha.I need some help on what to do.I came up with 2 options.Buy a legal copy of 8.1 and

wait for the 10 upgrade or wait untill 10 is released and buy a legal copy.Does anyone have any other suggestions,I could use the advice,thank-you.

I would suggest you to buy a legitimate copy of Windows 8.1 and then install it on your system. If you don't, you won't be able to get support from BleepingComputer since we don't offer assistance to users using illegally activated programs. Plus, if you buy Windows 8.1, you'll still be eligible for the free upgrade to Windows 10 in the first years of the release and Windows 8.1 right now will be less expansive than Windows 10, so its a good deal. If you need help with the reinstallation let me know.

On a side note, never have more than one Antivirus installed on a system at a time. Even if they are disabled, it can cause system issues and conflicts. So if you are to install one Antivirus, uninstall the other before.

Also, the reason why AVG didn't pick up the KMS Activator is probably because it isn't known to them at this time. If you upload the executable on VirusTotal, you'll see which Antivirus and Antimalware companies detects it and which one doesn't

Did the computer come with Windows 8 when purchased. If so then the original Windows 8 key is embedded in firmware and you can download a full version of Windows 8.1 here. Make sure you download the same version as what was on the machine, home or pro. Most likely Home.

If you can boot the computer use FirmwareTablesview to see the Windows 8 key. Look under the MSDM table. You can confirm the key using Produkey.

Actually,I deleted KMS from the whitelist and ran a scan and AVG did pick it up.That's what led me to believe he did it intentionally so we wouldn't find out.As far as the other,I will buy 8.1 and then upgrade when the time comes.Also,that's why it was kind of a long story.

I had no intentions of using a pirated copy,I came here for help,not to be reminded about illegal copies,I know better than that.So

I misread your whole post apparently. For now you can follow John's instructions and if you find the product key you won't have to buy Windows 8.1 again. As for AVG I thought the KMS wasn't white listed.

Instead of Rollback I would download and use something like Macrium Refect Free or Aoemi Backupper. In both programs it will allow you to create a bootable disk that will let you recover the disk image from an external drive to an unbootable computer or to a new drive. Another nice program from Aoemi is Onekey. After you install 8.1 use it to create a backup partition that can be accessed preboot. The image in the recovery partition can be updated as needed.

The Windows 10 upgrade is an upgrade, so it'll install over Windows 8.1. If you want to install it on a separate partition, you'll have to download the Windows 10 .iso and install it on that partition manually.